You make $11.29 per hour and worked 26 hours last week. They took out 5.2% for income taxes and 7.65% for FICA.
How much is your net pay for the week?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?